Kevin Duh, Katsuhito Sudoh, Hajime Tsukada, Hideki Isozaki, Masaaki Nagata
http://aclweb.org/anthology-new/P/P10/P10-1160.pdf
Kevin's slides
ACL 5th Workshop on Statistical Machine Translation (WMT) 2010

It would be great to have an illustrative but simple example of N-best list and also examples of features and examples of labels (to specify the terminology).

• <latex>L_p </latex> norm of a vector <latex>\vec{x}=(x_1, x_2,…,x_n)</latex> is defined as <latex>||\vec{x}||_p = (\sum_i |x_i|^p )^{1/p} </latex>, so e.g. <latex>L_1</latex> norm is simply a sum of absolute values. <latex>L_p</latex> norm is sometimes called also <latex>\fract{l}_p</latex> norm or just p-norm.